Twitter is set to take Yahoo’s place as the third-largest seller of online display advertising in the U.S., according to eMarketer.

The social media site is expected to claim 5% of the U.S. display ad market this year, up from 3.6% last year, the online ad researcher said in a report it plans to release Thursday. Twitter still trails Facebook, with 25.5% of the market; and Google, with a 13% share. Read More »

Europe’s plan to compete with the U.S. and Asia in the new digital economy is simple: bring its traditional hardware industry online before the likes of Google and Apple build their own automated cars and connect the world’s objects to the Internet with their proprietary software. Read More »

Christina Aguilera got her big break through the Disney film “Mulan,” while Kelly Clarkson got hers on the TV show “American Idol.” These days, as Tiffany Alvord’s 480 million video views and 2.5 million subscribers show, all you really need is YouTube. In this week’s Digits show, the Journal’s Eva Tam talks about how the video-sharing site is shaking up the music industry.

Sam Altman, who as president of Y Combinator helps run one of the most selective accelerators in the world, thinks hardware could yield more $10 billion startups. In a Q&A, he talks about how finding those companies means having an unconstrained definition of hardware. Read More »

Until recently, most of what was known about Google Inc.’s antitrust run-in with the Federal Trade Commission is that the agency declined to bring a suit. Such a move would have been one of highest-profile antitrust cases in recent years and would have challenged several elements of Google’s business.

Last week, The Wall Street Journal published an article based on a report written by the FTC’s competition bureau. It revealed for the first time that a key division of the FTC had strongly recommended filing a suit. It gave Google a pass—barely—on the core question of whether it had abused its position in the Internet search market, but pinpointed three other matters it urged the commission to sue over. Its analysis of Google’s business was also harsher than previously known. Google made changes to address two of the three issues.

The 160-page document was supposed to remain private but was inadvertently disclosed in an open-records request. The FTC mistakenly sent the Journal every other page of the staff recommendation. The FTC declined to release the undisclosed pages and asked the Journal to return the document, which it declined to do. Read More »

Kleiner Perkins Caufield & Byers never offered Ellen Pao a level playing field during her six-year career at the firm and broke the law, her attorney Alan Exelrod told a packed San Francisco courtroom in closing arguments Tuesday.

Hours later, Kleiner lawyer Lynne Hermle countered that claims of an uneven playing field are “meritless, frivolous.” Ms. Pao “didn’t want to play for team KP. She wanted to play for Team Ellen.”

The two adversaries went head-to-head in front of a packed gallery of 200 people, summing up a gender discrimination case that for the past four weeks has riveted Silicon Valley and sparked conversations about sexism in tech. Pao is seeking $16 million in damages as compensation, and potentially more if the jury concludes Kleiner acted maliciously. Read More »

Apple bought a startup that is developing a lightning-fast database, a sign the tech giant may be seeking ways to run its software services like iMessage more efficiently.

Apple agreed to acquire FoundationDB, a Virginia-based startup that developed database technology designed to crunch massive quantities of digital information very quickly. Such technologies are useful to data-reliant companies including those that tailor digital advertisements for websites. Read More »

The London-based startup makes a distributed computing platform that allows developers to create and operate asynchronous 3-D events in real time at a large scale, like the reaction of thousands of players to an explosion in a videogame or modeling a disease outbreak in a mobile and diverse population.

The three-year-old company has attracted a few early customers in academia, government and gaming, but has operated largely in stealth until Tuesday when it announced it had secured $20 million from Andreessen Horowitz. Read More »